The Seiko 7N42-0AJ0 is a watch model based on the 7N42 movement.
Parts List
| 300A21JN02 | crystal - crystal |
| 8K45F6SJW1 | crown - crown |
| 0F280BAD2 | case back gasket - case back gasket |
| 3154JG | band - band |
| 3176JG | band - band |
| 3154JG-LK | band - link |
| 3176JG-LK | band - link |
| 3176JG-PB | clasp - parts for buckle |
| 3176JG-BK | clasp - buckle |
| 3154JG-PB | clasp - parts for buckle |
| 3154JG-BK | clasp - buckle |
| 1AC082FABES | others - hour hand |
| 3AA125F4ANS | others - second hand |
| 2BC120FABES | others - minute hand |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 81606619 | others - bracelet fixing pin |
| 82736540 | others - case ring |
| 7N420AJ001D | others - case |
| 7N420AJ0 | others - case back |
| 81180249 | others - bracelet fixing pipe |
| 7N420AJ002D | others - case |
| 0878580 | others - date dial |
| 7N420AZ8XL13 | others - dial |
| 7N420AZ8XS13 | others - dial |
| 7N423 | others - machine code |
| 84350105 | others - dial ring |
| 84350106 | others - dial ring |